>>а команда lspci что показывает?
>
>[root@localhost root]# lspci
>00:00.0 Host bridge: Intel Corp. 82852/855GM Chipset Host Bridge (rev 02)
>00:00.1 System peripheral: Intel Corp.: Unknown device 3584 (rev 02)
>00:00.3 System peripheral: Intel Corp.: Unknown device 3585 (rev 02)
>00:02.0 VGA compatible controller: Intel Corp. 82852/855GM Chipset Integrated Graphics Device (rev
>02)
>00:02.1 Display controller: Intel Corp. 82852/855GM Chipset Integrated Graphics
>Device (rev 02)
>00:1d.0 USB Controller: Intel Corp. 82801DB USB (Hub #1) (rev 03)
>00:1d.1 USB Controller: Intel Corp. 82801DB USB (Hub #2) (rev 03)
>00:1d.2 USB Controller: Intel Corp. 82801DB USB (Hub #3) (rev 03)
>00:1d.7 USB Controller: Intel Corp. 82801DB USB EHCI Controller (rev 03)
>00:1e.0 PCI bridge: Intel Corp. 82801BAM/CAM PCI Bridge (rev 83)
>00:1f.0 ISA bridge: Intel Corp.: Unknown device 24cc (rev 03)
>00:1f.1 IDE interface: Intel Corp.: Unknown device 24ca (rev 03)
>00:1f.3 SMBus: Intel Corp. 82801DB SMBus (rev 03)
>00:1f.5 Multimedia audio controller: Intel Corp. 82801DB AC'97 Audio (rev 03)
>00:1f.6 Modem: Intel Corp. 82801DB AC'97 Modem (rev 03)
>02:02.0 Ethernet controller: Broadcom Corporation BCM4401 100Base-T (rev 01)
>02:04.0 Ethernet controller: Unknown device 17fe:2220
>02:06.0 CardBus bridge: Texas Instruments: Unknown device 8031

02:02.0 Ethernet controller: Broadcom Corporation BCM4401 100Base-T (rev 01)
это твоя wi-fi карточка. Ядро должно быть скомпилено с поддержкой модулем. Что показывает команда lsmod?